A Novel Hemispherical Basis for Accurate and Efficient Rendering

Gautron, Pascal; Krivanek, Jaroslav; Pattanaik, Sumanta; Bouatouch, Kadi

A Novel Hemispherical Basis for Accurate and Efficient Rendering

Files

321-330.pdf (2.76 MB)

Date

2004

Authors

Gautron, Pascal
Krivanek, Jaroslav
Pattanaik, Sumanta
Bouatouch, Kadi

Publisher

The Eurographics Association

Abstract

This paper presents a new set of hemispherical basis functions dedicated to hemispherical data representation. These functions are derived from associated Legendre polynomials. We demonstrate the usefulness of this basis for representation of surface reflectance functions, rendering using environment maps and for efficient global illumination computation using radiance caching. We show that our basis is more appropriate for hemispherical functions than spherical harmonics. This basis can be efficiently combined with spherical harmonics in applications involving both hemispherical and spherical data.

        @inproceedings{:10.2312/EGWR/EGSR04/321-330
,
booktitle = {Eurographics Workshop on Rendering
},
editor = {Alexander Keller and Henrik Wann Jensen
},
title = {{A Novel Hemispherical Basis for Accurate and Efficient Rendering
}},
author = {Gautron, Pascal and 
Krivanek, Jaroslav and 
Pattanaik, Sumanta and 
Bouatouch, Kadi
},
year = {2004
},
publisher = {The Eurographics Association
},
ISSN = {1727-3463
},
ISBN = {3-905673-12-6
},
DOI = {/10.2312/EGWR/EGSR04/321-330
}
}